The **8536SDO2V03** is a specific model of a NEMA-rated magnetic motor starter manufactured by **Schneider Electric (Square D)**. It belongs to the Type S series and is designed for starting and stopping AC motors while providing thermal overload protection. --- ## 1. Technical Specifications The following table summarizes the primary electrical and physical characteristics of this component: | Feature | Specification | | :--- | :--- | | **Product Type** | Magnetic Motor Starter | | **NEMA Size** | Size 2 | | **Continuous Ampere Rating** | 45 A | | **Number of Poles** | 3-Pole (3-Phase) | | **Control Circuit Voltage** | 240 V AC @ 60 Hz / 220 V AC @ 50 Hz | | **Horsepower Rating (Max)** | 10 HP @ 200V / 15 HP @ 230V / 25 HP @ 460-575V | | **Starter Type** | Non-Reversing | | **Enclosure Type** | Open (No external box included) | --- ## 2. Key Electronic & Mechanical Components The 8536SDO2V03 is an integrated assembly consisting of several critical parts: ### A. The Contactor (Main Body) The heart of the unit is a **NEMA Size 2 magnetic contactor**. It uses an electromagnetic coil to pull in a set of heavy-duty power contacts to complete the circuit to the motor. Unlike IEC contactors, NEMA contactors are designed for high durability and are physically larger to handle harsh industrial environments. ### B. The Operating Coil (V03 Suffix) The suffix **V03** denotes the voltage rating of the internal solenoid coil. - **Voltage:** 240V AC (60Hz) or 220V AC (50Hz). - **Function:** When control power is applied to this coil, it creates a magnetic field that closes the main power contacts. ### C. Thermal Overload Relay The starter includes a melting alloy overload relay (often referred to as a "heater block"). - **Protection:** It monitors the current drawn by the motor. If the current exceeds the safety threshold for too long, the heat melts a specialized alloy, tripping the mechanism and opening the control circuit to protect the motor from burnout. - **Note:** "Heater elements" (thermal units) are usually sized to the specific motor's Full Load Amps (FLA) and are often sold separately. --- ## 3. Wiring Configuration The unit typically follows standard industrial wiring for three-phase systems: ```mermaid graph TD Line1[L1] --> Contact1[Contactor Pole 1] --> OL1[Overload 1] --> T1[Motor Term 1] Line2[L2] --> Contact2[Contactor Pole 2] --> OL2[Overload 2] --> T2[Motor Term 2] Line3[L3] --> Contact3[Contactor Pole 3] --> OL3[Overload 3] --> T3[Motor Term 3] ``` --- ## 4. Application Use Cases - **Industrial Pumps:** High-torque starting requirements. - **Conveyor Systems:** Reliable start/stop cycles in manufacturing. - **HVAC Fans:** Large industrial blowers requiring robust motor protection.